Revert "Moved snippet about top-level functions to the implementation…

… location"

This reverts commit 7e09e4a.

exercises/rna-transcription/src/main/kotlin/RnaTranscription.kt

@@ -1,9 +1 @@
-/*
-  In Kotlin functions can be declared at top level in a file, meaning
-  you do not need to create a class to hold a function, like languages
-  such as Java, C# or Scala.
-
-  http://kotlinlang.org/docs/reference/functions.html#function-scope
- */
-
 fun transcribeToRna(dna: String): String = ""

exercises/rna-transcription/src/test/kotlin/RnaTranscriptionTest.kt

@@ -3,6 +3,15 @@ import org.junit.Test;
 
 class RnaTranscriptionTest {
 
+    /*
+      In Kotlin functions can be declared at top level in a file, meaning
+      you do not need to create a class to hold a function, like languages
+      such as Java, C# or Scala.
+
+      http://kotlinlang.org/docs/reference/functions.html#function-scope
+
+     */
+
     @Test
     fun emptyDnaIsEmptyRna() {
         Assert.assertEquals("", transcribeToRna(""));